Google confirms that Penguin 4.0 rollout is complete.

The Google Penguin real-time algorithm has been completely rolled out. The process started on 23rd Sept’16 and is now active on all of Google’s data centres.

The update was confirmed by Google’s Gary Illyes through his Twitter account. With the new code live at all the data centers, those sites affected by the old Google Penguin issues would see a recovery while taking the required steps for link clean-ups. You can see the impact on your site’s ranking based on these clean-up efforts.